55103442240 has 448 divisors, whose sum is σ = 219631564800. Its totient is φ = 11370946560.

The previous prime is 55103442227. The next prime is 55103442257. The reversal of 55103442240 is 4224430155.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 55103442198 and 55103442207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11011579 + ... + 11016581.

Almost surely, 2^55103442240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55103442240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109815782400).

55103442240 is an abundant number, since it is smaller than the sum of its proper divisors (164528122560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55103442240 is a wasteful number, since it uses less digits than its factorization.

55103442240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5190 (or 5180 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 55103442240 its reverse (4224430155), we get a palindrome (59327872395).

The spelling of 55103442240 in words is "fifty-five billion, one hundred three million, four hundred forty-two thousand, two hundred forty".